private FeatureGroupAllocation ParseFeatureGroupAllocation()

in src/Microsoft.Extensions.Configuration.AzureAppConfiguration/FeatureManagement/FeatureManagementKeyValueAdapter.cs [965:1046]
69 lines of code
16 McCabe index (conditional complexity)

        private FeatureGroupAllocation ParseFeatureGroupAllocation(ref Utf8JsonReader reader, string settingKey)
        {
            var featureGroupAllocation = new FeatureGroupAllocation();

            while (reader.Read() && reader.TokenType != JsonTokenType.EndObject)
            {
                if (reader.TokenType != JsonTokenType.PropertyName)
                {
                    continue;
                }

                string groupAllocationPropertyName = reader.GetString();

                switch (groupAllocationPropertyName)
                {
                    case FeatureManagementConstants.Variant:
                        {
                            if (reader.Read() && reader.TokenType == JsonTokenType.String)
                            {
                                featureGroupAllocation.Variant = reader.GetString();
                            }
                            else if (reader.TokenType != JsonTokenType.Null)
                            {
                                throw CreateFeatureFlagFormatException(
                                    FeatureManagementConstants.Variant,
                                    settingKey,
                                    reader.TokenType.ToString(),
                                    JsonTokenType.String.ToString());
                            }

                            break;
                        }

                    case FeatureManagementConstants.Groups:
                        {
                            if (reader.Read() && reader.TokenType == JsonTokenType.StartArray)
                            {
                                List<string> groups = new List<string>();

                                int i = 0;

                                while (reader.Read() && reader.TokenType != JsonTokenType.EndArray)
                                {
                                    if (reader.TokenType == JsonTokenType.String)
                                    {
                                        groups.Add(reader.GetString());
                                    }
                                    else if (reader.TokenType != JsonTokenType.Null)
                                    {
                                        throw CreateFeatureFlagFormatException(
                                            $"{FeatureManagementConstants.Groups}[{i}]",
                                            settingKey,
                                            reader.TokenType.ToString(),
                                            JsonTokenType.String.ToString());
                                    }

                                    i++;
                                }

                                featureGroupAllocation.Groups = groups;
                            }
                            else if (reader.TokenType != JsonTokenType.Null)
                            {
                                throw CreateFeatureFlagFormatException(
                                    FeatureManagementConstants.Groups,
                                    settingKey,
                                    reader.TokenType.ToString(),
                                    JsonTokenType.StartArray.ToString());
                            }

                            break;
                        }

                    default:
                        reader.Skip();

                        break;
                }
            }

            return featureGroupAllocation;
        }